Hello,
Yes, it could be either or even both. When was the last time they were changed?
Also, is you engine light on? If so would help to get codes pulled and post them here.
There are a number of causes for an engine miss.
Vacuum Leak
Fouled Plugs
Bad Wires
Dirty Injectors
Failed Injectors
Plus others
.
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Sunday, December 27th, 2009 AT 3:36 PM